Hi. After reading the thread about 24 hour time in Thunderbird, I decided to make some experiments with date and time formats. I have wished for a long time to set the date format to use ISO-8601 and to use a 24 hour clock, but how to do this hasn't been obvious. I started by running Thunderbird with LC_TIME set to sv_SE.utf8, and sure, it showed date and time in the expected format. I then figured I'd check 'ls -l'. I was (very) surprised to see that ls -l now gives the date in ISO-8601 format, even though my LANG has the value 'en_US.UTF-8'. Substituting US for UK changed to the traditional format. Why does LC_TIME=en_US.UTF-8 give american date/time format in Thunderbird, but ISO-8601 format in 'ls -l'? And the same applies to sv_SE.UTF-8, which gives ISO-8601 format in Thunderbird, but another format in 'ls -l'. I'm really lost here. This computer runs Fedora 7 with all updates up to today's batch. My physical locale is Sweden, with a Swedish keyboard, but my system language is English (which I wish to keep). $ env | egrep '(LANG|LC)' LANG=en_US.UTF-8 Regards Ingemar